[PATCH] Fix missing dump_impl_location_t values, using a new dump_metadata_t

Richard Biener richard.guenther@gmail.com
Wed Nov 21 13:40:00 GMT 2018


On Tue, Nov 20, 2018 at 8:37 PM David Malcolm <dmalcolm@redhat.com> wrote:
>
> The dump_* API attempts to capture emission location metadata for the
> various dump messages, but looking in -fsave-optimization-record shows
> that many dump messages are lacking useful impl_location values, instead
> having this location within dumpfile.c:
>
>             "impl_location": {
>                 "file": "../../src/gcc/dumpfile.c",
>                 "function": "ensure_pending_optinfo",
>                 "line": 1169
>             },
>
> The problem is that the auto-capturing of dump_impl_location_t is tied to
> dump_location_t, and this is tied to the dump_*_loc calls.  If a message
> comes from a dump_* call without a "_loc" suffix (e.g. dump_printf), the
> current code synthesizes the dump_location_t within
> dump_context::ensure_pending_optinfo, and thus saves the useless
> impl_location seen above.
>
> This patch fixes things by changing the dump_* API so that, rather than
> taking a dump_flags_t, they take a new class dump_metadata_t, which is
> constructed from a dump_flags_t, but captures the emission location.
>
> Hence e.g.:
>
>   dump_printf (MSG_NOTE, "some message\n");
>
> implicitly builds a dump_metadata_t wrapping the MSG_NOTE and the
> emission location.  If there are several dump_printf calls without
> a dump_*_loc call, the emission location within the optinfo is that
> of the first dump call within it.
>
> The patch updates selftest::test_capture_of_dump_calls to verify
> that the impl location of various dump_* calls is captured.  I also
> manually verified that the references to dumpfile.c in the saved
> optimization records were fixed.
>
> Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
>
> OK for trunk?

OK.

Richard.

> gcc/ChangeLog:
>         * dump-context.h (dump_context::dump_loc): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.  Convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_context::dump_loc_immediate): Convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_context::dump_gimple_stmt): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::void dump_gimple_stmt_loc): Likewise; convert
>         2nd param from const dump_location_t & to
>         const dump_user_location_t &.
>         (dump_context::dump_gimple_expr): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::dump_gimple_expr_loc): Likewise; convert
>         2nd param from const dump_location_t & to
>         const dump_user_location_t &.
>         (dump_context::dump_generic_expr): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::dump_generic_expr_loc): Likewise; convert
>         2nd param from const dump_location_t & to
>         const dump_user_location_t &.
>         (dump_context::dump_printf_va): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::dump_printf_loc_va): Likewise; convert
>         2nd param from const dump_location_t & to
>         const dump_user_location_t &.
>         (dump_context::dump_dec): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::dump_symtab_node): Likewise.
>         (dump_context::begin_scope): Split out 2nd param into
>         user and impl locations.
>         (dump_context::ensure_pending_optinfo): Add metadata param.
>         (dump_context::begin_next_optinfo): Replace dump_location_t param
>         with metadata and user location.
>         * dumpfile.c (dump_context::dump_loc): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.  Convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_context::dump_loc_immediate): Convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_context::dump_gimple_stmt): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::void dump_gimple_stmt_loc): Likewise; convert
>         2nd param from const dump_location_t & to
>         const dump_user_location_t &.
>         (dump_context::dump_gimple_expr): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::dump_gimple_expr_loc): Likewise; convert
>         2nd param from const dump_location_t & to
>         const dump_user_location_t &.
>         (dump_context::dump_generic_expr): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::dump_generic_expr_loc): Likewise; convert
>         2nd param from const dump_location_t & to
>         const dump_user_location_t &.
>         (dump_context::dump_printf_va): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::dump_printf_loc_va): Likewise; convert
>         2nd param from const dump_location_t & to
>         const dump_user_location_t &.
>         (dump_context::dump_dec): Convert 1st param from
>         dump_flags_t to const dump_metadata_t &.
>         (dump_context::dump_symtab_node): Likewise.
>         (dump_context::begin_scope): Split out 2nd param into
>         user and impl locations.
>         (dump_context::ensure_pending_optinfo): Add metadata param.
>         (dump_context::begin_next_optinfo): Replace dump_location_t param
>         with metadata and user location.
>         (dump_gimple_stmt): Convert 1st param from dump_flags_t to
>         const dump_metadata_t &.
>         (dump_gimple_stmt_loc): Likewise; convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_gimple_expr): Convert 1st param from dump_flags_t to
>         const dump_metadata_t &.
>         (dump_gimple_expr_loc): Likewise; convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_generic_expr): Convert 1st param from dump_flags_t to
>         const dump_metadata_t &.
>         (dump_generic_expr_loc): Likewise; convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_printf): Convert 1st param from dump_flags_t to
>         const dump_metadata_t &.
>         (dump_printf_loc): Likewise; convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_dec): Convert 1st param from dump_flags_t to
>         const dump_metadata_t &.
>         (dump_symtab_node): Likewise.
>         (dump_begin_scope): Split out 2nd param into user and impl
>         locations.
>         (selftest::assert_impl_location_eq): New function.
>         (ASSERT_IMPL_LOCATION_EQ): New macro.
>         (selftest::test_impl_location): Update to use
>         ASSERT_IMPL_LOCATION_EQ.
>         (selftest::test_capture_of_dump_calls): Convert "loc" to
>         dump_user_location_t.  Add ASSERT_IMPL_LOCATION_EQ throughout,
>         verifying line numbers of dump emissions.
>         * dumpfile.h (class dump_metadata_t): New class.
>         (dump_printf): Convert 1st param from dump_flags_t to
>         const dump_metadata_t &.
>         (dump_printf_loc): Likewise; convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_generic_expr_loc): Likewise.
>         (dump_generic_expr): Convert 1st param from dump_flags_t to
>         const dump_metadata_t &.
>         (dump_gimple_stmt_loc): Likewise; convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_gimple_stmt): Convert 1st param from dump_flags_t to
>         const dump_metadata_t &.
>         (dump_gimple_expr_loc): Likewise; convert 2nd param from
>         const dump_location_t & to const dump_user_location_t &.
>         (dump_gimple_expr): Convert 1st param from dump_flags_t to
>         const dump_metadata_t &.
>         (dump_symtab_node): Likewise.
>         (dump_dec): Likewise.
>         (dump_begin_scope): Split out 2nd param into user and impl
>         locations.
>         (auto_dump_scope::auto_dump_scope): Split "loc" param into a user
>         location and impl_location, and capture the impl_location.
>         (AUTO_DUMP_SCOPE): Rename param from LOC to USER_LOC.
>         * loop-unroll.c (report_unroll): Update for changes to
>         dump_printf_loc and dump_printf.
>         * opt-problem.cc (opt_problem::opt_problem): Update for change to
>         dump_loc.
>         * optinfo-emit-json.cc
>         (selftest::test_building_json_from_dump_calls): Convert "loc" from
>         dump_location_t to dump_user_location_t.
>         * optinfo.cc (optinfo::emit_for_opt_problem): Update for change in
>         dump_loc_immediate.
>         * profile.c (compute_branch_probabilities): Update for change to
>         dump_printf_loc.
>         * selftest.h (ASSERT_STR_CONTAINS_AT): New macro.
>         * tree-vect-slp.c (vect_print_slp_tree): Update for change to
>         dump_printf_loc.
> ---
>  gcc/dump-context.h       |  49 +++++----
>  gcc/dumpfile.c           | 277 +++++++++++++++++++++++++++++++----------------
>  gcc/dumpfile.h           |  72 +++++++++---
>  gcc/loop-unroll.c        |   7 +-
>  gcc/opt-problem.cc       |   2 +-
>  gcc/optinfo-emit-json.cc |   2 +-
>  gcc/optinfo.cc           |   2 +-
>  gcc/profile.c            |   2 +-
>  gcc/selftest.h           |   9 ++
>  gcc/tree-vect-slp.c      |   8 +-
>  10 files changed, 292 insertions(+), 138 deletions(-)
>
> diff --git a/gcc/dump-context.h b/gcc/dump-context.h
> index 2016ce7..26bed1e 100644
> --- a/gcc/dump-context.h
> +++ b/gcc/dump-context.h
> @@ -50,51 +50,57 @@ class dump_context
>
>    void refresh_dumps_are_enabled ();
>
> -  void dump_loc (dump_flags_t dump_kind, const dump_location_t &loc);
> -  void dump_loc_immediate (dump_flags_t dump_kind, const dump_location_t &loc);
> +  void dump_loc (const dump_metadata_t &metadata,
> +                const dump_user_location_t &loc);
> +  void dump_loc_immediate (dump_flags_t dump_kind,
> +                          const dump_user_location_t &loc);
>
> -  void dump_gimple_stmt (dump_flags_t dump_kind, dump_flags_t extra_dump_flags,
> +  void dump_gimple_stmt (const dump_metadata_t &metadata,
> +                        dump_flags_t extra_dump_flags,
>                          gimple *gs, int spc);
>
> -  void dump_gimple_stmt_loc (dump_flags_t dump_kind,
> -                            const dump_location_t &loc,
> +  void dump_gimple_stmt_loc (const dump_metadata_t &metadata,
> +                            const dump_user_location_t &loc,
>                              dump_flags_t extra_dump_flags,
>                              gimple *gs, int spc);
>
> -  void dump_gimple_expr (dump_flags_t dump_kind,
> +  void dump_gimple_expr (const dump_metadata_t &metadata,
>                          dump_flags_t extra_dump_flags,
>                          gimple *gs, int spc);
>
> -  void dump_gimple_expr_loc (dump_flags_t dump_kind,
> -                           const dump_location_t &loc,
> -                           dump_flags_t extra_dump_flags,
> -                           gimple *gs,
> -                           int spc);
> +  void dump_gimple_expr_loc (const dump_metadata_t &metadata,
> +                            const dump_user_location_t &loc,
> +                            dump_flags_t extra_dump_flags,
> +                            gimple *gs,
> +                            int spc);
>
> -  void dump_generic_expr (dump_flags_t dump_kind,
> +  void dump_generic_expr (const dump_metadata_t &metadata,
>                           dump_flags_t extra_dump_flags,
>                           tree t);
>
> -  void dump_generic_expr_loc (dump_flags_t dump_kind,
> -                             const dump_location_t &loc,
> +  void dump_generic_expr_loc (const dump_metadata_t &metadata,
> +                             const dump_user_location_t &loc,
>                               dump_flags_t extra_dump_flags,
>                               tree t);
>
> -  void dump_printf_va (dump_flags_t dump_kind, const char *format,
> +  void dump_printf_va (const dump_metadata_t &metadata, const char *format,
>                        va_list *ap) ATTRIBUTE_GCC_DUMP_PRINTF (3, 0);
>
> -  void dump_printf_loc_va (dump_flags_t dump_kind, const dump_location_t &loc,
> +  void dump_printf_loc_va (const dump_metadata_t &metadata,
> +                          const dump_user_location_t &loc,
>                            const char *format, va_list *ap)
>      ATTRIBUTE_GCC_DUMP_PRINTF (4, 0);
>
>    template<unsigned int N, typename C>
> -  void dump_dec (dump_flags_t dump_kind, const poly_int<N, C> &value);
> +  void dump_dec (const dump_metadata_t &metadata, const poly_int<N, C> &value);
>
> -  void dump_symtab_node (dump_flags_t dump_kind, symtab_node *node);
> +  void dump_symtab_node (const dump_metadata_t &metadata, symtab_node *node);
>
>    /* Managing nested scopes.  */
>    unsigned int get_scope_depth () const;
> -  void begin_scope (const char *name, const dump_location_t &loc);
> +  void begin_scope (const char *name,
> +                   const dump_user_location_t &user_location,
> +                   const dump_impl_location_t &impl_location);
>    void end_scope ();
>
>    /* Should optinfo instances be created?
> @@ -117,8 +123,9 @@ class dump_context
>    bool apply_dump_filter_p (dump_flags_t dump_kind, dump_flags_t filter) const;
>
>   private:
> -  optinfo &ensure_pending_optinfo ();
> -  optinfo &begin_next_optinfo (const dump_location_t &loc);
> +  optinfo &ensure_pending_optinfo (const dump_metadata_t &metadata);
> +  optinfo &begin_next_optinfo (const dump_metadata_t &metadata,
> +                              const dump_user_location_t &loc);
>
>    /* The current nesting depth of dump scopes, for showing nesting
>       via indentation).  */
> diff --git a/gcc/dumpfile.c b/gcc/dumpfile.c
> index e125650..5005f5e 100644
> --- a/gcc/dumpfile.c
> +++ b/gcc/dumpfile.c
> @@ -580,24 +580,22 @@ dump_context::apply_dump_filter_p (dump_flags_t dump_kind,
>     If optinfos are enabled, begin a new optinfo.  */
>
>  void
> -dump_context::dump_loc (dump_flags_t dump_kind, const dump_location_t &loc)
> +dump_context::dump_loc (const dump_metadata_t &metadata,
> +                       const dump_user_location_t &loc)
>  {
>    end_any_optinfo ();
>
> -  dump_loc_immediate (dump_kind, loc);
> +  dump_loc_immediate (metadata.get_dump_flags (), loc);
>
>    if (optinfo_enabled_p ())
> -    {
> -      optinfo &info = begin_next_optinfo (loc);
> -      info.handle_dump_file_kind (dump_kind);
> -    }
> +    begin_next_optinfo (metadata, loc);
>  }
>
>  /* As dump_loc above, but without starting a new optinfo. */
>
>  void
>  dump_context::dump_loc_immediate (dump_flags_t dump_kind,
> -                                 const dump_location_t &loc)
> +                                 const dump_user_location_t &loc)
>  {
>    location_t srcloc = loc.get_location_t ();
>
> @@ -632,18 +630,17 @@ make_item_for_dump_gimple_stmt (gimple *stmt, int spc, dump_flags_t dump_flags)
>     EXTRA_DUMP_FLAGS on the dump streams if DUMP_KIND is enabled.  */
>
>  void
> -dump_context::dump_gimple_stmt (dump_flags_t dump_kind,
> +dump_context::dump_gimple_stmt (const dump_metadata_t &metadata,
>                                 dump_flags_t extra_dump_flags,
>                                 gimple *gs, int spc)
>  {
>    optinfo_item *item
>      = make_item_for_dump_gimple_stmt (gs, spc, dump_flags | extra_dump_flags);
> -  emit_item (item, dump_kind);
> +  emit_item (item, metadata.get_dump_flags ());
>
>    if (optinfo_enabled_p ())
>      {
> -      optinfo &info = ensure_pending_optinfo ();
> -      info.handle_dump_file_kind (dump_kind);
> +      optinfo &info = ensure_pending_optinfo (metadata);
>        info.add_item (item);
>      }
>    else
> @@ -653,13 +650,13 @@ dump_context::dump_gimple_stmt (dump_flags_t dump_kind,
>  /* Similar to dump_gimple_stmt, except additionally print source location.  */
>
>  void
> -dump_context::dump_gimple_stmt_loc (dump_flags_t dump_kind,
> -                                   const dump_location_t &loc,
> +dump_context::dump_gimple_stmt_loc (const dump_metadata_t &metadata,
> +                                   const dump_user_location_t &loc,
>                                     dump_flags_t extra_dump_flags,
>                                     gimple *gs, int spc)
>  {
> -  dump_loc (dump_kind, loc);
> -  dump_gimple_stmt (dump_kind, extra_dump_flags, gs, spc);
> +  dump_loc (metadata, loc);
> +  dump_gimple_stmt (metadata, extra_dump_flags, gs, spc);
>  }
>
>  /* Make an item for the given dump call, equivalent to print_gimple_expr.  */
> @@ -683,18 +680,17 @@ make_item_for_dump_gimple_expr (gimple *stmt, int spc, dump_flags_t dump_flags)
>     Do not terminate with a newline or semicolon.  */
>
>  void
> -dump_context::dump_gimple_expr (dump_flags_t dump_kind,
> +dump_context::dump_gimple_expr (const dump_metadata_t &metadata,
>                                 dump_flags_t extra_dump_flags,
>                                 gimple *gs, int spc)
>  {
>    optinfo_item *item
>      = make_item_for_dump_gimple_expr (gs, spc, dump_flags | extra_dump_flags);
> -  emit_item (item, dump_kind);
> +  emit_item (item, metadata.get_dump_flags ());
>
>    if (optinfo_enabled_p ())
>      {
> -      optinfo &info = ensure_pending_optinfo ();
> -      info.handle_dump_file_kind (dump_kind);
> +      optinfo &info = ensure_pending_optinfo (metadata);
>        info.add_item (item);
>      }
>    else
> @@ -704,14 +700,14 @@ dump_context::dump_gimple_expr (dump_flags_t dump_kind,
>  /* Similar to dump_gimple_expr, except additionally print source location.  */
>
>  void
> -dump_context::dump_gimple_expr_loc (dump_flags_t dump_kind,
> -                                   const dump_location_t &loc,
> +dump_context::dump_gimple_expr_loc (const dump_metadata_t &metadata,
> +                                   const dump_user_location_t &loc,
>                                     dump_flags_t extra_dump_flags,
>                                     gimple *gs,
>                                     int spc)
>  {
> -  dump_loc (dump_kind, loc);
> -  dump_gimple_expr (dump_kind, extra_dump_flags, gs, spc);
> +  dump_loc (metadata, loc);
> +  dump_gimple_expr (metadata, extra_dump_flags, gs, spc);
>  }
>
>  /* Make an item for the given dump call, equivalent to print_generic_expr.  */
> @@ -738,18 +734,17 @@ make_item_for_dump_generic_expr (tree node, dump_flags_t dump_flags)
>     DUMP_KIND is enabled.  */
>
>  void
> -dump_context::dump_generic_expr (dump_flags_t dump_kind,
> +dump_context::dump_generic_expr (const dump_metadata_t &metadata,
>                                  dump_flags_t extra_dump_flags,
>                                  tree t)
>  {
>    optinfo_item *item
>      = make_item_for_dump_generic_expr (t, dump_flags | extra_dump_flags);
> -  emit_item (item, dump_kind);
> +  emit_item (item, metadata.get_dump_flags ());
>
>    if (optinfo_enabled_p ())
>      {
> -      optinfo &info = ensure_pending_optinfo ();
> -      info.handle_dump_file_kind (dump_kind);
> +      optinfo &info = ensure_pending_optinfo (metadata);
>        info.add_item (item);
>      }
>    else
> @@ -761,13 +756,13 @@ dump_context::dump_generic_expr (dump_flags_t dump_kind,
>     location.  */
>
>  void
> -dump_context::dump_generic_expr_loc (dump_flags_t dump_kind,
> -                                    const dump_location_t &loc,
> +dump_context::dump_generic_expr_loc (const dump_metadata_t &metadata,
> +                                    const dump_user_location_t &loc,
>                                      dump_flags_t extra_dump_flags,
>                                      tree t)
>  {
> -  dump_loc (dump_kind, loc);
> -  dump_generic_expr (dump_kind, extra_dump_flags, t);
> +  dump_loc (metadata, loc);
> +  dump_generic_expr (metadata, extra_dump_flags, t);
>  }
>
>  /* Make an item for the given dump call.  */
> @@ -987,10 +982,10 @@ dump_pretty_printer::decode_format (text_info *text, const char *spec,
>  /* Output a formatted message using FORMAT on appropriate dump streams.  */
>
>  void
> -dump_context::dump_printf_va (dump_flags_t dump_kind, const char *format,
> +dump_context::dump_printf_va (const dump_metadata_t &metadata, const char *format,
>                               va_list *ap)
>  {
> -  dump_pretty_printer pp (this, dump_kind);
> +  dump_pretty_printer pp (this, metadata.get_dump_flags ());
>
>    text_info text;
>    text.err_no = errno;
> @@ -1003,8 +998,7 @@ dump_context::dump_printf_va (dump_flags_t dump_kind, const char *format,
>    /* Phase 3.  */
>    if (optinfo_enabled_p ())
>      {
> -      optinfo &info = ensure_pending_optinfo ();
> -      info.handle_dump_file_kind (dump_kind);
> +      optinfo &info = ensure_pending_optinfo (metadata);
>        pp.emit_items (&info);
>      }
>    else
> @@ -1015,12 +1009,12 @@ dump_context::dump_printf_va (dump_flags_t dump_kind, const char *format,
>     dump location captured.  */
>
>  void
> -dump_context::dump_printf_loc_va (dump_flags_t dump_kind,
> -                                 const dump_location_t &loc,
> +dump_context::dump_printf_loc_va (const dump_metadata_t &metadata,
> +                                 const dump_user_location_t &loc,
>                                   const char *format, va_list *ap)
>  {
> -  dump_loc (dump_kind, loc);
> -  dump_printf_va (dump_kind, format, ap);
> +  dump_loc (metadata, loc);
> +  dump_printf_va (metadata, format, ap);
>  }
>
>  /* Make an item for the given dump call, equivalent to print_dec.  */
> @@ -1056,15 +1050,14 @@ make_item_for_dump_dec (const poly_int<N, C> &value)
>
>  template<unsigned int N, typename C>
>  void
> -dump_context::dump_dec (dump_flags_t dump_kind, const poly_int<N, C> &value)
> +dump_context::dump_dec (const dump_metadata_t &metadata, const poly_int<N, C> &value)
>  {
>    optinfo_item *item = make_item_for_dump_dec (value);
> -  emit_item (item, dump_kind);
> +  emit_item (item, metadata.get_dump_flags ());
>
>    if (optinfo_enabled_p ())
>      {
> -      optinfo &info = ensure_pending_optinfo ();
> -      info.handle_dump_file_kind (dump_kind);
> +      optinfo &info = ensure_pending_optinfo (metadata);
>        info.add_item (item);
>      }
>    else
> @@ -1074,15 +1067,14 @@ dump_context::dump_dec (dump_flags_t dump_kind, const poly_int<N, C> &value)
>  /* Output the name of NODE on appropriate dump streams.  */
>
>  void
> -dump_context::dump_symtab_node (dump_flags_t dump_kind, symtab_node *node)
> +dump_context::dump_symtab_node (const dump_metadata_t &metadata, symtab_node *node)
>  {
>    optinfo_item *item = make_item_for_dump_symtab_node (node);
> -  emit_item (item, dump_kind);
> +  emit_item (item, metadata.get_dump_flags ());
>
>    if (optinfo_enabled_p ())
>      {
> -      optinfo &info = ensure_pending_optinfo ();
> -      info.handle_dump_file_kind (dump_kind);
> +      optinfo &info = ensure_pending_optinfo (metadata);
>        info.add_item (item);
>      }
>    else
> @@ -1105,19 +1097,23 @@ dump_context::get_scope_depth () const
>     Emit a "scope" optinfo if optinfos are enabled.  */
>
>  void
> -dump_context::begin_scope (const char *name, const dump_location_t &loc)
> +dump_context::begin_scope (const char *name,
> +                          const dump_user_location_t &user_location,
> +                          const dump_impl_location_t &impl_location)
>  {
>    m_scope_depth++;
>
> +  location_t src_loc = user_location.get_location_t ();
> +
>    if (dump_file && apply_dump_filter_p (MSG_NOTE, pflags))
> -    ::dump_loc (MSG_NOTE, dump_file, loc.get_location_t ());
> +    ::dump_loc (MSG_NOTE, dump_file, src_loc);
>
>    if (alt_dump_file && apply_dump_filter_p (MSG_NOTE, alt_flags))
> -    ::dump_loc (MSG_NOTE, alt_dump_file, loc.get_location_t ());
> +    ::dump_loc (MSG_NOTE, alt_dump_file, src_loc);
>
>    /* Support for temp_dump_context in selftests.  */
>    if (m_test_pp && apply_dump_filter_p (MSG_NOTE, m_test_pp_flags))
> -    ::dump_loc (MSG_NOTE, m_test_pp, loc.get_location_t ());
> +    ::dump_loc (MSG_NOTE, m_test_pp, src_loc);
>
>    pretty_printer pp;
>    pp_printf (&pp, "=== %s ===\n", name);
> @@ -1128,7 +1124,9 @@ dump_context::begin_scope (const char *name, const dump_location_t &loc)
>
>    if (optinfo_enabled_p ())
>      {
> -      optinfo &info = begin_next_optinfo (loc);
> +      optinfo &info
> +       = begin_next_optinfo (dump_metadata_t (MSG_NOTE, impl_location),
> +                             user_location);
>        info.m_kind = OPTINFO_KIND_SCOPE;
>        info.add_item (item);
>        end_any_optinfo ();
> @@ -1163,10 +1161,10 @@ dump_context::optinfo_enabled_p () const
>     necessary.  */
>
>  optinfo &
> -dump_context::ensure_pending_optinfo ()
> +dump_context::ensure_pending_optinfo (const dump_metadata_t &metadata)
>  {
>    if (!m_pending)
> -    return begin_next_optinfo (dump_location_t (dump_user_location_t ()));
> +    return begin_next_optinfo (metadata, dump_user_location_t ());
>    return *m_pending;
>  }
>
> @@ -1174,11 +1172,14 @@ dump_context::ensure_pending_optinfo ()
>     accumulated.  */
>
>  optinfo &
> -dump_context::begin_next_optinfo (const dump_location_t &loc)
> +dump_context::begin_next_optinfo (const dump_metadata_t &metadata,
> +                                 const dump_user_location_t &user_loc)
>  {
>    end_any_optinfo ();
>    gcc_assert (m_pending == NULL);
> +  dump_location_t loc (user_loc, metadata.get_impl_location ());
>    m_pending = new optinfo (loc, OPTINFO_KIND_NOTE, current_pass);
> +  m_pending->handle_dump_file_kind (metadata.get_dump_flags ());
>    return *m_pending;
>  }
>
> @@ -1248,21 +1249,22 @@ dump_context dump_context::s_default;
>     EXTRA_DUMP_FLAGS on the dump streams if DUMP_KIND is enabled.  */
>
>  void
> -dump_gimple_stmt (dump_flags_t dump_kind, dump_flags_t extra_dump_flags,
> +dump_gimple_stmt (const dump_metadata_t &metadata, dump_flags_t extra_dump_flags,
>                   gimple *gs, int spc)
>  {
>    VERIFY_DUMP_ENABLED_P;
> -  dump_context::get ().dump_gimple_stmt (dump_kind, extra_dump_flags, gs, spc);
> +  dump_context::get ().dump_gimple_stmt (metadata, extra_dump_flags, gs, spc);
>  }
>
>  /* Similar to dump_gimple_stmt, except additionally print source location.  */
>
>  void
> -dump_gimple_stmt_loc (dump_flags_t dump_kind, const dump_location_t &loc,
> +dump_gimple_stmt_loc (const dump_metadata_t &metadata,
> +                     const dump_user_location_t &loc,
>                       dump_flags_t extra_dump_flags, gimple *gs, int spc)
>  {
>    VERIFY_DUMP_ENABLED_P;
> -  dump_context::get ().dump_gimple_stmt_loc (dump_kind, loc, extra_dump_flags,
> +  dump_context::get ().dump_gimple_stmt_loc (metadata, loc, extra_dump_flags,
>                                              gs, spc);
>  }
>
> @@ -1271,21 +1273,23 @@ dump_gimple_stmt_loc (dump_flags_t dump_kind, const dump_location_t &loc,
>     Do not terminate with a newline or semicolon.  */
>
>  void
> -dump_gimple_expr (dump_flags_t dump_kind, dump_flags_t extra_dump_flags,
> +dump_gimple_expr (const dump_metadata_t &metadata,
> +                 dump_flags_t extra_dump_flags,
>                   gimple *gs, int spc)
>  {
>    VERIFY_DUMP_ENABLED_P;
> -  dump_context::get ().dump_gimple_expr (dump_kind, extra_dump_flags, gs, spc);
> +  dump_context::get ().dump_gimple_expr (metadata, extra_dump_flags, gs, spc);
>  }
>
>  /* Similar to dump_gimple_expr, except additionally print source location.  */
>
>  void
> -dump_gimple_expr_loc (dump_flags_t dump_kind, const dump_location_t &loc,
> +dump_gimple_expr_loc (const dump_metadata_t &metadata,
> +                     const dump_user_location_t &loc,
>                       dump_flags_t extra_dump_flags, gimple *gs, int spc)
>  {
>    VERIFY_DUMP_ENABLED_P;
> -  dump_context::get ().dump_gimple_expr_loc (dump_kind, loc, extra_dump_flags,
> +  dump_context::get ().dump_gimple_expr_loc (metadata, loc, extra_dump_flags,
>                                              gs, spc);
>  }
>
> @@ -1293,34 +1297,35 @@ dump_gimple_expr_loc (dump_flags_t dump_kind, const dump_location_t &loc,
>     DUMP_KIND is enabled.  */
>
>  void
> -dump_generic_expr (dump_flags_t dump_kind, dump_flags_t extra_dump_flags,
> +dump_generic_expr (const dump_metadata_t &metadata, dump_flags_t extra_dump_flags,
>                    tree t)
>  {
>    VERIFY_DUMP_ENABLED_P;
> -  dump_context::get ().dump_generic_expr (dump_kind, extra_dump_flags, t);
> +  dump_context::get ().dump_generic_expr (metadata, extra_dump_flags, t);
>  }
>
>  /* Similar to dump_generic_expr, except additionally print the source
>     location.  */
>
>  void
> -dump_generic_expr_loc (dump_flags_t dump_kind, const dump_location_t &loc,
> +dump_generic_expr_loc (const dump_metadata_t &metadata,
> +                      const dump_user_location_t &loc,
>                        dump_flags_t extra_dump_flags, tree t)
>  {
>    VERIFY_DUMP_ENABLED_P;
> -  dump_context::get ().dump_generic_expr_loc (dump_kind, loc, extra_dump_flags,
> +  dump_context::get ().dump_generic_expr_loc (metadata, loc, extra_dump_flags,
>                                               t);
>  }
>
>  /* Output a formatted message using FORMAT on appropriate dump streams.  */
>
>  void
> -dump_printf (dump_flags_t dump_kind, const char *format, ...)
> +dump_printf (const dump_metadata_t &metadata, const char *format, ...)
>  {
>    VERIFY_DUMP_ENABLED_P;
>    va_list ap;
>    va_start (ap, format);
> -  dump_context::get ().dump_printf_va (dump_kind, format, &ap);
> +  dump_context::get ().dump_printf_va (metadata, format, &ap);
>    va_end (ap);
>  }
>
> @@ -1328,13 +1333,14 @@ dump_printf (dump_flags_t dump_kind, const char *format, ...)
>     dump location captured.  */
>
>  void
> -dump_printf_loc (dump_flags_t dump_kind, const dump_location_t &loc,
> +dump_printf_loc (const dump_metadata_t &metadata,
> +                const dump_user_location_t &loc,
>                  const char *format, ...)
>  {
>    VERIFY_DUMP_ENABLED_P;
>    va_list ap;
>    va_start (ap, format);
> -  dump_context::get ().dump_printf_loc_va (dump_kind, loc, format, &ap);
> +  dump_context::get ().dump_printf_loc_va (metadata, loc, format, &ap);
>    va_end (ap);
>  }
>
> @@ -1342,17 +1348,17 @@ dump_printf_loc (dump_flags_t dump_kind, const dump_location_t &loc,
>
>  template<unsigned int N, typename C>
>  void
> -dump_dec (dump_flags_t dump_kind, const poly_int<N, C> &value)
> +dump_dec (const dump_metadata_t &metadata, const poly_int<N, C> &value)
>  {
>    VERIFY_DUMP_ENABLED_P;
> -  dump_context::get ().dump_dec (dump_kind, value);
> +  dump_context::get ().dump_dec (metadata, value);
>  }
>
> -template void dump_dec (dump_flags_t, const poly_uint16 &);
> -template void dump_dec (dump_flags_t, const poly_int64 &);
> -template void dump_dec (dump_flags_t, const poly_uint64 &);
> -template void dump_dec (dump_flags_t, const poly_offset_int &);
> -template void dump_dec (dump_flags_t, const poly_widest_int &);
> +template void dump_dec (const dump_metadata_t &metadata, const poly_uint16 &);
> +template void dump_dec (const dump_metadata_t &metadata, const poly_int64 &);
> +template void dump_dec (const dump_metadata_t &metadata, const poly_uint64 &);
> +template void dump_dec (const dump_metadata_t &metadata, const poly_offset_int &);
> +template void dump_dec (const dump_metadata_t &metadata, const poly_widest_int &);
>
>  void
>  dump_dec (dump_flags_t dump_kind, const poly_wide_int &value, signop sgn)
> @@ -1394,10 +1400,10 @@ dumpfile_ensure_any_optinfo_are_flushed ()
>  /* Output the name of NODE on appropriate dump streams.  */
>
>  void
> -dump_symtab_node (dump_flags_t dump_kind, symtab_node *node)
> +dump_symtab_node (const dump_metadata_t &metadata, symtab_node *node)
>  {
>    VERIFY_DUMP_ENABLED_P;
> -  dump_context::get ().dump_symtab_node (dump_kind, node);
> +  dump_context::get ().dump_symtab_node (metadata, node);
>  }
>
>  /* Get the current dump scope-nesting depth.
> @@ -1416,9 +1422,11 @@ get_dump_scope_depth ()
>     Increment the scope depth.  */
>
>  void
> -dump_begin_scope (const char *name, const dump_location_t &loc)
> +dump_begin_scope (const char *name,
> +                 const dump_user_location_t &user_location,
> +                 const dump_impl_location_t &impl_location)
>  {
> -  dump_context::get ().begin_scope (name, loc);
> +  dump_context::get ().begin_scope (name, user_location, impl_location);
>  }
>
>  /* Pop a nested dump scope.  */
> @@ -2083,6 +2091,36 @@ temp_dump_context::get_dumped_text ()
>    return pp_formatted_text (&m_pp);
>  }
>
> +/* Verify that IMPL_LOC is within EXPECTED_FILE at EXPECTED_LINE,
> +   from EXPECTED_FUNCTION, using LOC for the location of any failure,
> +   provided that the build compiler is sufficiently recent.  */
> +
> +static void
> +assert_impl_location_eq (const location &loc ATTRIBUTE_UNUSED,
> +                        const dump_impl_location_t &impl_loc ATTRIBUTE_UNUSED,
> +                        const char *expected_file ATTRIBUTE_UNUSED,
> +                        int expected_line ATTRIBUTE_UNUSED,
> +                        const char *expected_function ATTRIBUTE_UNUSED)
> +{
> +#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
> +  ASSERT_STR_CONTAINS_AT (loc, impl_loc.m_file, expected_file);
> +  ASSERT_EQ_AT (loc, impl_loc.m_line, expected_line);
> +  ASSERT_STR_CONTAINS_AT (loc, impl_loc.m_function, expected_function);
> +#endif
> +}
> +
> +/* Verify that IMPL_LOC is within EXPECTED_FILE at EXPECTED_LINE,
> +   from EXPECTED_FUNCTION, provided that the build compiler is
> +   sufficiently recent.  */
> +
> +#define ASSERT_IMPL_LOCATION_EQ(IMPL_LOC, EXPECTED_FILE, EXPECTED_LINE, \
> +                               EXPECTED_FUNCTION)                      \
> +  SELFTEST_BEGIN_STMT                                                  \
> +    assert_impl_location_eq (SELFTEST_LOCATION, IMPL_LOC,              \
> +                            EXPECTED_FILE, EXPECTED_LINE,              \
> +                            EXPECTED_FUNCTION);                        \
> +  SELFTEST_END_STMT
> +
>  /* Verify that the dump_location_t constructors capture the source location
>     at which they were called (provided that the build compiler is sufficiently
>     recent).  */
> @@ -2090,31 +2128,29 @@ temp_dump_context::get_dumped_text ()
>  static void
>  test_impl_location ()
>  {
> -#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
>    /* Default ctor.  */
>    {
>      dump_location_t loc;
>      const int expected_line = __LINE__ - 1;
> -    ASSERT_STR_CONTAINS (loc.get_impl_location ().m_file, "dumpfile.c");
> -    ASSERT_EQ (loc.get_impl_location ().m_line, expected_line);
> +    ASSERT_IMPL_LOCATION_EQ (loc.get_impl_location (),
> +                            "dumpfile.c", expected_line, "test_impl_location");
>    }
>
>    /* Constructing from a gimple.  */
>    {
>      dump_location_t loc ((gimple *)NULL);
>      const int expected_line = __LINE__ - 1;
> -    ASSERT_STR_CONTAINS (loc.get_impl_location ().m_file, "dumpfile.c");
> -    ASSERT_EQ (loc.get_impl_location ().m_line, expected_line);
> +    ASSERT_IMPL_LOCATION_EQ (loc.get_impl_location (),
> +                            "dumpfile.c", expected_line, "test_impl_location");
>    }
>
>    /* Constructing from an rtx_insn.  */
>    {
>      dump_location_t loc ((rtx_insn *)NULL);
>      const int expected_line = __LINE__ - 1;
> -    ASSERT_STR_CONTAINS (loc.get_impl_location ().m_file, "dumpfile.c");
> -    ASSERT_EQ (loc.get_impl_location ().m_line, expected_line);
> +    ASSERT_IMPL_LOCATION_EQ (loc.get_impl_location (),
> +                            "dumpfile.c", expected_line, "test_impl_location");
>    }
> -#endif
>  }
>
>  /* Verify that the text dumped so far in CONTEXT equals
> @@ -2161,7 +2197,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>    if (stmt_loc > LINE_MAP_MAX_LOCATION_WITH_COLS)
>      return;
>
> -  dump_location_t loc = dump_location_t::from_location_t (stmt_loc);
> +  dump_user_location_t loc = dump_user_location_t::from_location_t (stmt_loc);
>
>    gimple *stmt = gimple_build_return (NULL);
>    gimple_set_location (stmt, stmt_loc);
> @@ -2188,6 +2224,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>         temp_dump_context tmp (with_optinfo, true,
>                                MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>         dump_printf (MSG_NOTE, "int: %i str: %s", 42, "foo");
> +       const int expected_impl_line = __LINE__ - 1;
>
>         ASSERT_DUMPED_TEXT_EQ (tmp, "int: 42 str: foo");
>         if (with_optinfo)
> @@ -2197,6 +2234,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_EQ (info->get_kind (), OPTINFO_KIND_NOTE);
>             ASSERT_EQ (info->num_items (), 1);
>             ASSERT_IS_TEXT (info->get_item (0), "int: 42 str: foo");
> +           ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                    "dumpfile.c", expected_impl_line,
> +                                    "test_capture_of_dump_calls");
>           }
>        }
>
> @@ -2205,6 +2245,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>         temp_dump_context tmp (with_optinfo, true,
>                                MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>         dump_printf (MSG_NOTE, "tree: %T", integer_zero_node);
> +       const int expected_impl_line = __LINE__ - 1;
>
>         ASSERT_DUMPED_TEXT_EQ (tmp, "tree: 0");
>         if (with_optinfo)
> @@ -2215,6 +2256,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_EQ (info->num_items (), 2);
>             ASSERT_IS_TEXT (info->get_item (0), "tree: ");
>             ASSERT_IS_TREE (info->get_item (1), UNKNOWN_LOCATION, "0");
> +           ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                    "dumpfile.c", expected_impl_line,
> +                                    "test_capture_of_dump_calls");
>           }
>        }
>
> @@ -2223,6 +2267,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>         temp_dump_context tmp (with_optinfo, true,
>                                MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>         dump_printf (MSG_NOTE, "gimple: %E", stmt);
> +       const int expected_impl_line = __LINE__ - 1;
>
>         ASSERT_DUMPED_TEXT_EQ (tmp, "gimple: return;");
>         if (with_optinfo)
> @@ -2233,6 +2278,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_EQ (info->num_items (), 2);
>             ASSERT_IS_TEXT (info->get_item (0), "gimple: ");
>             ASSERT_IS_GIMPLE (info->get_item (1), stmt_loc, "return;");
> +           ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                    "dumpfile.c", expected_impl_line,
> +                                    "test_capture_of_dump_calls");
>           }
>        }
>
> @@ -2241,6 +2289,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>         temp_dump_context tmp (with_optinfo, true,
>                                MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>         dump_printf (MSG_NOTE, "gimple: %G", stmt);
> +       const int expected_impl_line = __LINE__ - 1;
>
>         ASSERT_DUMPED_TEXT_EQ (tmp, "gimple: return;\n");
>         if (with_optinfo)
> @@ -2251,6 +2300,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_EQ (info->num_items (), 2);
>             ASSERT_IS_TEXT (info->get_item (0), "gimple: ");
>             ASSERT_IS_GIMPLE (info->get_item (1), stmt_loc, "return;\n");
> +           ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                    "dumpfile.c", expected_impl_line,
> +                                    "test_capture_of_dump_calls");
>           }
>        }
>
> @@ -2259,6 +2311,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>         temp_dump_context tmp (with_optinfo, true,
>                                MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>         dump_printf (MSG_NOTE, "node: %C", node);
> +       const int expected_impl_line = __LINE__ - 1;
>
>         ASSERT_DUMPED_TEXT_EQ (tmp, "node: test_decl/0");
>         if (with_optinfo)
> @@ -2269,6 +2322,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_EQ (info->num_items (), 2);
>             ASSERT_IS_TEXT (info->get_item (0), "node: ");
>             ASSERT_IS_SYMTAB_NODE (info->get_item (1), decl_loc, "test_decl/0");
> +           ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                    "dumpfile.c", expected_impl_line,
> +                                    "test_capture_of_dump_calls");
>           }
>        }
>
> @@ -2302,6 +2358,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_IS_GIMPLE (info->get_item (5), stmt_loc, "return;");
>             ASSERT_IS_GIMPLE (info->get_item (6), stmt_loc, "return;");
>             ASSERT_IS_TEXT (info->get_item (7), " after\n");
> +           /* We don't ASSERT_IMPL_LOCATION_EQ here, to avoid having to
> +              enforce at which exact line the multiline dump_printf_loc
> +              occurred.  */
>           }
>        }
>
> @@ -2310,6 +2369,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>         temp_dump_context tmp (with_optinfo, true,
>                                MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>         dump_printf_loc (MSG_NOTE, loc, "test of tree: ");
> +       const int expected_impl_line = __LINE__ - 1;
>         dump_generic_expr (MSG_NOTE, TDF_SLIM, integer_zero_node);
>
>         ASSERT_DUMPED_TEXT_EQ (tmp, "test.txt:5:10: note: test of tree: 0");
> @@ -2322,6 +2382,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_EQ (info->num_items (), 2);
>             ASSERT_IS_TEXT (info->get_item (0), "test of tree: ");
>             ASSERT_IS_TREE (info->get_item (1), UNKNOWN_LOCATION, "0");
> +           ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                    "dumpfile.c", expected_impl_line,
> +                                    "test_capture_of_dump_calls");
>           }
>        }
>
> @@ -2330,6 +2393,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>         temp_dump_context tmp (with_optinfo, true,
>                                MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>         dump_generic_expr_loc (MSG_NOTE, loc, TDF_SLIM, integer_one_node);
> +       const int expected_impl_line = __LINE__ - 1;
>
>         ASSERT_DUMPED_TEXT_EQ (tmp, "test.txt:5:10: note: 1");
>         if (with_optinfo)
> @@ -2340,6 +2404,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_EQ (info->get_kind (), OPTINFO_KIND_NOTE);
>             ASSERT_EQ (info->num_items (), 1);
>             ASSERT_IS_TREE (info->get_item (0), UNKNOWN_LOCATION, "1");
> +           ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                    "dumpfile.c", expected_impl_line,
> +                                    "test_capture_of_dump_calls");
>           }
>        }
>
> @@ -2350,6 +2417,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>           temp_dump_context tmp (with_optinfo, true,
>                                  MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>           dump_gimple_stmt_loc (MSG_NOTE, loc, TDF_SLIM, stmt, 2);
> +         const int expected_impl_line = __LINE__ - 1;
>
>           ASSERT_DUMPED_TEXT_EQ (tmp, "test.txt:5:10: note: return;\n");
>           if (with_optinfo)
> @@ -2358,6 +2426,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>               ASSERT_TRUE (info != NULL);
>               ASSERT_EQ (info->num_items (), 1);
>               ASSERT_IS_GIMPLE (info->get_item (0), stmt_loc, "return;\n");
> +             ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                      "dumpfile.c", expected_impl_line,
> +                                      "test_capture_of_dump_calls");
>             }
>         }
>
> @@ -2366,6 +2437,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>           temp_dump_context tmp (with_optinfo, true,
>                                  MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>           dump_gimple_stmt (MSG_NOTE, TDF_SLIM, stmt, 2);
> +         const int expected_impl_line = __LINE__ - 1;
>
>           ASSERT_DUMPED_TEXT_EQ (tmp, "return;\n");
>           if (with_optinfo)
> @@ -2374,6 +2446,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>               ASSERT_TRUE (info != NULL);
>               ASSERT_EQ (info->num_items (), 1);
>               ASSERT_IS_GIMPLE (info->get_item (0), stmt_loc, "return;\n");
> +             ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                      "dumpfile.c", expected_impl_line,
> +                                      "test_capture_of_dump_calls");
>             }
>         }
>
> @@ -2382,6 +2457,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>           temp_dump_context tmp (with_optinfo, true,
>                                  MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>           dump_gimple_expr_loc (MSG_NOTE, loc, TDF_SLIM, stmt, 2);
> +         const int expected_impl_line = __LINE__ - 1;
>
>           ASSERT_DUMPED_TEXT_EQ (tmp, "test.txt:5:10: note: return;");
>           if (with_optinfo)
> @@ -2390,6 +2466,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>               ASSERT_TRUE (info != NULL);
>               ASSERT_EQ (info->num_items (), 1);
>               ASSERT_IS_GIMPLE (info->get_item (0), stmt_loc, "return;");
> +             ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                      "dumpfile.c", expected_impl_line,
> +                                      "test_capture_of_dump_calls");
>             }
>         }
>
> @@ -2398,6 +2477,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>           temp_dump_context tmp (with_optinfo, true,
>                                  MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>           dump_gimple_expr (MSG_NOTE, TDF_SLIM, stmt, 2);
> +         const int expected_impl_line = __LINE__ - 1;
>
>           ASSERT_DUMPED_TEXT_EQ (tmp, "return;");
>           if (with_optinfo)
> @@ -2406,6 +2486,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>               ASSERT_TRUE (info != NULL);
>               ASSERT_EQ (info->num_items (), 1);
>               ASSERT_IS_GIMPLE (info->get_item (0), stmt_loc, "return;");
> +             ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                      "dumpfile.c", expected_impl_line,
> +                                      "test_capture_of_dump_calls");
>             }
>         }
>        }
> @@ -2415,6 +2498,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>         temp_dump_context tmp (with_optinfo, true,
>                                MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>         dump_symtab_node (MSG_NOTE, node);
> +       const int expected_impl_line = __LINE__ - 1;
>
>         ASSERT_DUMPED_TEXT_EQ (tmp, "test_decl/0");
>         if (with_optinfo)
> @@ -2424,6 +2508,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_EQ (info->get_kind (), OPTINFO_KIND_NOTE);
>             ASSERT_EQ (info->num_items (), 1);
>             ASSERT_IS_SYMTAB_NODE (info->get_item (0), decl_loc, "test_decl/0");
> +           ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                    "dumpfile.c", expected_impl_line,
> +                                    "test_capture_of_dump_calls");
>           }
>        }
>
> @@ -2432,6 +2519,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>         temp_dump_context tmp (with_optinfo, true,
>                                MSG_ALL_KINDS | MSG_PRIORITY_USER_FACING);
>         dump_dec (MSG_NOTE, poly_int64 (42));
> +       const int expected_impl_line = __LINE__ - 1;
>
>         ASSERT_DUMPED_TEXT_EQ (tmp, "42");
>         if (with_optinfo)
> @@ -2440,6 +2528,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             ASSERT_TRUE (info != NULL);
>             ASSERT_EQ (info->num_items (), 1);
>             ASSERT_IS_TEXT (info->get_item (0), "42");
> +           ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                    "dumpfile.c", expected_impl_line,
> +                                    "test_capture_of_dump_calls");
>           }
>        }
>
> @@ -2476,6 +2567,7 @@ test_capture_of_dump_calls (const line_table_case &case_)
>             dump_printf_loc (MSG_NOTE, stmt, "msg 6\n");
>           }
>           dump_printf_loc (MSG_NOTE, stmt, "msg 7\n");
> +         const int expected_impl_line = __LINE__ - 1;
>
>           switch (dump_filter & MSG_ALL_PRIORITIES)
>             {
> @@ -2527,6 +2619,9 @@ test_capture_of_dump_calls (const line_table_case &case_)
>               ASSERT_TRUE (info != NULL);
>               ASSERT_EQ (info->num_items (), 1);
>               ASSERT_IS_TEXT (info->get_item (0), "msg 7\n");
> +             ASSERT_IMPL_LOCATION_EQ (info->get_impl_location (),
> +                                      "dumpfile.c", expected_impl_line,
> +                                      "test_capture_of_dump_calls");
>             }
>         }
>      }
> diff --git a/gcc/dumpfile.h b/gcc/dumpfile.h
> index c82157d..d51e4ce 100644
> --- a/gcc/dumpfile.h
> +++ b/gcc/dumpfile.h
> @@ -385,6 +385,38 @@ struct dump_impl_location_t
>    const char *m_function;
>  };
>
> +/* A bundle of metadata for describing a dump message:
> +   (a) the dump_flags
> +   (b) the source location within the compiler/plugin.
> +
> +   The constructors use default parameters so that (b) gets sets up
> +   automatically.
> +
> +   Hence you can pass in e.g. MSG_NOTE, and the dump call
> +   will automatically record where in GCC's source code the
> +   dump was emitted from.  */
> +
> +class dump_metadata_t
> +{
> + public:
> +  dump_metadata_t (dump_flags_t dump_flags,
> +                  const dump_impl_location_t &impl_location
> +                    = dump_impl_location_t ())
> +  : m_dump_flags (dump_flags),
> +    m_impl_location (impl_location)
> +  {
> +  }
> +
> +  dump_flags_t get_dump_flags () const { return m_dump_flags; }
> +
> +  const dump_impl_location_t &
> +  get_impl_location () const { return m_impl_location; }
> +
> + private:
> +  dump_flags_t m_dump_flags;
> +  dump_impl_location_t m_impl_location;
> +};
> +
>  /* A bundle of information for describing the location of a dump message:
>     (a) the source location and hotness within the user's code, together with
>     (b) the source location within the compiler/plugin.
> @@ -521,27 +553,30 @@ dump_enabled_p (void)
>     to minimize the work done for the common case where dumps
>     are disabled.  */
>
> -extern void dump_printf (dump_flags_t, const char *, ...)
> +extern void dump_printf (const dump_metadata_t &, const char *, ...)
>    ATTRIBUTE_GCC_DUMP_PRINTF (2, 3);
>
> -extern void dump_printf_loc (dump_flags_t, const dump_location_t &,
> +extern void dump_printf_loc (const dump_metadata_t &, const dump_user_location_t &,
>                              const char *, ...)
>    ATTRIBUTE_GCC_DUMP_PRINTF (3, 0);
>  extern void dump_function (int phase, tree fn);
>  extern void dump_basic_block (dump_flags_t, basic_block, int);
> -extern void dump_generic_expr_loc (dump_flags_t, const dump_location_t &,
> +extern void dump_generic_expr_loc (const dump_metadata_t &,
> +                                  const dump_user_location_t &,
>                                    dump_flags_t, tree);
> -extern void dump_generic_expr (dump_flags_t, dump_flags_t, tree);
> -extern void dump_gimple_stmt_loc (dump_flags_t, const dump_location_t &,
> +extern void dump_generic_expr (const dump_metadata_t &, dump_flags_t, tree);
> +extern void dump_gimple_stmt_loc (const dump_metadata_t &,
> +                                 const dump_user_location_t &,
>                                   dump_flags_t, gimple *, int);
> -extern void dump_gimple_stmt (dump_flags_t, dump_flags_t, gimple *, int);
> -extern void dump_gimple_expr_loc (dump_flags_t, const dump_location_t &,
> +extern void dump_gimple_stmt (const dump_metadata_t &, dump_flags_t, gimple *, int);
> +extern void dump_gimple_expr_loc (const dump_metadata_t &,
> +                                 const dump_user_location_t &,
>                                   dump_flags_t, gimple *, int);
> -extern void dump_gimple_expr (dump_flags_t, dump_flags_t, gimple *, int);
> -extern void dump_symtab_node (dump_flags_t, symtab_node *);
> +extern void dump_gimple_expr (const dump_metadata_t &, dump_flags_t, gimple *, int);
> +extern void dump_symtab_node (const dump_metadata_t &, symtab_node *);
>
>  template<unsigned int N, typename C>
> -void dump_dec (dump_flags_t, const poly_int<N, C> &);
> +void dump_dec (const dump_metadata_t &, const poly_int<N, C> &);
>  extern void dump_dec (dump_flags_t, const poly_wide_int &, signop);
>  extern void dump_hex (dump_flags_t, const poly_wide_int &);
>
> @@ -551,7 +586,9 @@ extern void dumpfile_ensure_any_optinfo_are_flushed ();
>     leading to a dump message.  */
>
>  extern unsigned int get_dump_scope_depth ();
> -extern void dump_begin_scope (const char *name, const dump_location_t &loc);
> +extern void dump_begin_scope (const char *name,
> +                             const dump_user_location_t &user_location,
> +                             const dump_impl_location_t &impl_location);
>  extern void dump_end_scope ();
>
>  /* Implementation detail of the AUTO_DUMP_SCOPE macro below.
> @@ -563,10 +600,13 @@ extern void dump_end_scope ();
>  class auto_dump_scope
>  {
>   public:
> -  auto_dump_scope (const char *name, dump_location_t loc)
> +  auto_dump_scope (const char *name,
> +                  const dump_user_location_t &user_location,
> +                  const dump_impl_location_t &impl_location
> +                  = dump_impl_location_t ())
>    {
>      if (dump_enabled_p ())
> -      dump_begin_scope (name, loc);
> +      dump_begin_scope (name, user_location, impl_location);
>    }
>    ~auto_dump_scope ()
>    {
> @@ -576,7 +616,7 @@ class auto_dump_scope
>  };
>
>  /* A macro for calling:
> -     dump_begin_scope (NAME, LOC);
> +     dump_begin_scope (NAME, USER_LOC);
>     via an RAII object, thus printing "=== MSG ===\n" to the dumpfile etc,
>     and then calling
>       dump_end_scope ();
> @@ -587,8 +627,8 @@ class auto_dump_scope
>     top level implicitly default to MSG_PRIORITY_USER_FACING, whereas those
>     in a nested scope implicitly default to MSG_PRIORITY_INTERNALS.  */
>
> -#define AUTO_DUMP_SCOPE(NAME, LOC) \
> -  auto_dump_scope scope (NAME, LOC)
> +#define AUTO_DUMP_SCOPE(NAME, USER_LOC) \
> +  auto_dump_scope scope (NAME, USER_LOC)
>
>  extern void dump_function (int phase, tree fn);
>  extern void print_combine_total_stats (void);
> diff --git a/gcc/loop-unroll.c b/gcc/loop-unroll.c
> index 48bbda0..5b37052 100644
> --- a/gcc/loop-unroll.c
> +++ b/gcc/loop-unroll.c
> @@ -199,15 +199,16 @@ report_unroll (struct loop *loop, dump_location_t locus)
>    if (!dump_enabled_p ())
>      return;
>
> -  dump_printf_loc (report_flags, locus,
> +  dump_metadata_t metadata (report_flags, locus.get_impl_location ());
> +  dump_printf_loc (metadata, locus.get_user_location (),
>                     "loop unrolled %d times",
>                     loop->lpt_decision.times);
>    if (profile_info && loop->header->count.initialized_p ())
> -    dump_printf (report_flags,
> +    dump_printf (metadata,
>                   " (header execution count %d)",
>                   (int)loop->header->count.to_gcov_type ());
>
> -  dump_printf (report_flags, "\n");
> +  dump_printf (metadata, "\n");
>  }
>
>  /* Decide whether unroll loops and how much.  */
> diff --git a/gcc/opt-problem.cc b/gcc/opt-problem.cc
> index dad3a8c..c781ee3 100644
> --- a/gcc/opt-problem.cc
> +++ b/gcc/opt-problem.cc
> @@ -54,7 +54,7 @@ opt_problem::opt_problem (const dump_location_t &loc,
>
>    /* Print the location to the "immediate" dump destinations.  */
>    dump_context &dc = dump_context::get ();
> -  dc.dump_loc (MSG_MISSED_OPTIMIZATION, loc);
> +  dc.dump_loc (MSG_MISSED_OPTIMIZATION, loc.get_user_location ());
>
>    /* Print the formatted string to this opt_problem's optinfo, dumping
>       the items to the "immediate" dump destinations, and storing items
> diff --git a/gcc/optinfo-emit-json.cc b/gcc/optinfo-emit-json.cc
> index 841a13b..f28a0e3 100644
> --- a/gcc/optinfo-emit-json.cc
> +++ b/gcc/optinfo-emit-json.cc
> @@ -453,7 +453,7 @@ static void
>  test_building_json_from_dump_calls ()
>  {
>    temp_dump_context tmp (true, true, MSG_NOTE);
> -  dump_location_t loc;
> +  dump_user_location_t loc;
>    dump_printf_loc (MSG_NOTE, loc, "test of tree: ");
>    dump_generic_expr (MSG_NOTE, TDF_SLIM, integer_zero_node);
>    optinfo *info = tmp.get_pending_optinfo ();
> diff --git a/gcc/optinfo.cc b/gcc/optinfo.cc
> index f76da45..314fcbf 100644
> --- a/gcc/optinfo.cc
> +++ b/gcc/optinfo.cc
> @@ -118,7 +118,7 @@ optinfo::emit_for_opt_problem () const
>    dump_kind |= MSG_PRIORITY_REEMITTED;
>
>    /* Re-emit to "immediate" destinations, without creating a new optinfo.  */
> -  dump_context::get ().dump_loc_immediate (dump_kind, get_dump_location ());
> +  dump_context::get ().dump_loc_immediate (dump_kind, get_user_location ());
>    unsigned i;
>    optinfo_item *item;
>    FOR_EACH_VEC_ELT (m_items, i, item)
> diff --git a/gcc/profile.c b/gcc/profile.c
> index 2130319..be6d3b8 100644
> --- a/gcc/profile.c
> +++ b/gcc/profile.c
> @@ -577,7 +577,7 @@ compute_branch_probabilities (unsigned cfg_checksum, unsigned lineno_checksum)
>             {
>               informed = 1;
>               dump_printf_loc (MSG_NOTE,
> -                             dump_location_t::from_location_t (input_location),
> +                             dump_user_location_t::from_location_t (input_location),
>                                "correcting inconsistent profile data\n");
>             }
>           correct_negative_edge_counts ();
> diff --git a/gcc/selftest.h b/gcc/selftest.h
> index 29ade6b..2d7cc3b55 100644
> --- a/gcc/selftest.h
> +++ b/gcc/selftest.h
> @@ -436,6 +436,15 @@ extern int num_passes;
>                                    (HAYSTACK), (NEEDLE));               \
>    SELFTEST_END_STMT
>
> +/* Like ASSERT_STR_CONTAINS, but treat LOC as the effective location of the
> +   selftest.  */
> +
> +#define ASSERT_STR_CONTAINS_AT(LOC, HAYSTACK, NEEDLE)                  \
> +  SELFTEST_BEGIN_STMT                                                  \
> +  ::selftest::assert_str_contains (LOC, #HAYSTACK, #NEEDLE,            \
> +                                  (HAYSTACK), (NEEDLE));               \
> +  SELFTEST_END_STMT
> +
>  /* Evaluate STR and PREFIX and determine if STR starts with PREFIX.
>       ::selftest::pass if STR does start with PREFIX.
>       ::selftest::fail if does not, or either is NULL.  */
> diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
> index f2bb8da..c5bf39c 100644
> --- a/gcc/tree-vect-slp.c
> +++ b/gcc/tree-vect-slp.c
> @@ -1457,14 +1457,16 @@ vect_print_slp_tree (dump_flags_t dump_kind, dump_location_t loc,
>    if (visited.add (node))
>      return;
>
> -  dump_printf_loc (dump_kind, loc, "node%s %p\n",
> +  dump_metadata_t metadata (dump_kind, loc.get_impl_location ());
> +  dump_user_location_t user_loc = loc.get_user_location ();
> +  dump_printf_loc (metadata, user_loc, "node%s %p\n",
>                    SLP_TREE_DEF_TYPE (node) != vect_internal_def
>                    ? " (external)" : "", node);
>    FOR_EACH_VEC_ELT (SLP_TREE_SCALAR_STMTS (node), i, stmt_info)
> -    dump_printf_loc (dump_kind, loc, "\tstmt %d %G", i, stmt_info->stmt);
> +    dump_printf_loc (metadata, user_loc, "\tstmt %d %G", i, stmt_info->stmt);
>    if (SLP_TREE_CHILDREN (node).is_empty ())
>      return;
> -  dump_printf_loc (dump_kind, loc, "\tchildren");
> +  dump_printf_loc (metadata, user_loc, "\tchildren");
>    FOR_EACH_VEC_ELT (SLP_TREE_CHILDREN (node), i, child)
>      dump_printf (dump_kind, " %p", (void *)child);
>    dump_printf (dump_kind, "\n");
> --
> 1.8.5.3
>



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